FOCUS ON EC FAN ONLY
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
The PB3N280B4E-YZ5 280mm IP55 EC-AC Backward Curved Centrifugal Fan is specifically engineered for precision cooling scenarios in the IT and electronics industry, including data center in-row air conditioners (electronic cooling centrifugal fans) and precision power distribution cabinet cooling (electrical enclosure fans). This fan is also ideally suited for data center indirect evaporative cooling systems, micro-module data centers, and edge computing nodes — applications that demand high static pressure to overcome long-distance plenum resistance and high-density server rear thermal channels.
Powered by EC motor (electronically commutated brushless motor) technology — built on a brushless DC motor core with electronic commutation for precise and efficient energy conversion — this backward curved centrifugal fan delivers exceptional energy savings compared to traditional AC induction motors.
With over 15 years of expertise in EC/AC motor and fan technologies, PBM ensures that our backward curved centrifugal fans strictly comply with CE, UL, and RoHS international safety standards. Customization services are available to meet your specific requirements.
Choose the PB3N280B4E-YZ5 for a high static pressure, low noise, IP55 EC-AC backward curved centrifugal fan for your most demanding data center and precision cooling applications.
General Characters
|
1-1 |
Rated Voltage |
380 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
304~456 VAC |
|
1-4 |
Rated Speed | 3400 RPM |
|
1-5 |
Input Current |
1.26 A |
|
1-6 |
Input Power |
800 W |
|
1-7 |
Air Flow |
2177.45 CFM / 3700 M³/H |
|
1-8 |
Static Pressure |
4.72 inH2O / 1180 Pa |
|
1-9 |
Acoustical Noise |
93 dB(A) |
|
1-10 |
Life Expectance |
50,000 Hours(L10) At 40℃ room, humidity 15%~65%RH. |
|
1-11 |
Insulation Class |
Class F |
|
1-13 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-14 |
Speed Control |
Control input 0~10VDC / PWM |
|
1-15 |
Protection Type |
IP55 |
|
1-17 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø283 mm X 225.5 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Aluminium sheet |
|
2-3 |
Number of Blades |
8 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
AC (AWG18#)，DC (AWG24#) |
Environmental Characters
|
3-1 |
Operating Temperature |
-25℃ to 60℃ |
|
3-2 |
Storage Temperature |
-40℃ to 75℃ |
|
3-3 |
Operating Humidity |
5% to 90% RH |
|
3-4 |
Storage Humidity |
5% to 95% RH |
Performance Curve
Testing Condition:
Input Voltage----Operating voltage (380VAC/50Hz)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: AC(6×AWG18#)，DC(6×AWG24#)
2.AC: Brown=L1(R)，Blue=L2(S)，Black=L3(T)，Green & Yellow=Protecting Earthing,White=NC，Gray=COM;
3.DC: Red=Voltage Output +10VDC, Yellow=0-10VDC/PWM, Blue=GND, White=Tach output, Brown=RSA,Gray=RSB ;
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